Overview

Perfect for supplemental heat, the 20,000 BTU Mr. Heater Vent-Free Radiant Heater will take the chill out of a new addition, sunroom, garage or any other small space. The integrated blower helps to circulate the heat and the built in thermostat automatically controls the temperature.

Some states prohibit the use of unvented heaters. Check local regulations. Can NOT be sold in California or Canada.

Product Details

You'll find the Mr. Heater Vent Free Radiant Heater to be just right for cold rooms, additions, sunrooms and more. It comes in both propane and natural gas models and features an oxygen depletion sensor for safe use indoors. It provides 20,000 BTUs of heat per hour; just right for a small area indoors or outdoors in the garage. A quiet, integrated blower provides gentle circulation of heated air. Temperature is automatically controlled by a built-in thermostat. The Mr. Heater Vent Free Radiant Heater can be mounted on the wall or stand upright on the floor using the legs provided. It's the perfect choice for supplemental heat to take the chill out of a small space.

CSA Certified

20,000 BTU per hour out put

Heats up to 600 square feet

Radiant heat for consistent warmth

Oxygen depletion sensor for safety indoors

Thermostat for automatic temperature control

Quiet integrated blower for gentle circulation of heated air

Can be mounted on the wall; or stand upright on the floor (Legs included)

Measures: 19" Wide x 24" High x 8" Deep

4500 ft. High Altitude Restriction

This heater is an LP gas unit. The minimum size tank that should be used with this vent free heater is a 40 pound tank.

Some states prohibit the use of unvented heaters. Check local regulations. Can NOT be sold in California or Canada.

Additional Information

Specifications

CSA Certified

20,000 BTU per hour out put

Heats up to 600 square feet

Radiant heat for consistent warmth

Oxygen depletion sensor for safety indoors

Thermostat for automatic temperature control

Quiet integrated blower for gentle circulation of heated air

Can be mounted on the wall; or stand upright on the floor (Legs included)

Measures: 19" Wide x 24" High x 8" Deep

4500 ft. High Altitude Restriction

Some states prohibit the use of unvented heaters. Check local regulations. Can NOT be sold in California or Canada.

The blower assembly is a STAND ALONE component meaning it has its own power plug and the switch is on this complete plug-in unit.
It does have a small heat sensor that is again only plugged into the fan assembly and will turn the fan on and off automatically when the heater turns on and off.
Since the fan assembly is not connected to the operation of the burners, the heater can operate without any power or without the fan plugged in.
The heater works off its own pilot flame and Capillary thermostat assembly that requires no power to operate.

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12/18/12

Q: What is the main difference between this model & the 20000 btu blue flame ?? I' am looking at them for RV use !

Answers (1)

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Customer S.

Verified Buyer

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12/18/12

A: The difference between the 5MH-F255474 20,000 BTU Mr. Heater Vent-Free Blue Flame Heater - Propane and the 20,000 BTU Mr. Heater Vent-Free Radiant Heater - Propane is the Blue flame unit provides an even convection heat and the red flame provides a constant radiant heat. In a convection heater, heated air convects around a room and provides warm air currents. The colder air near the floor is drawn through the heater. This heated air will circulate up and then down and around a room. Walls, carpets and furniture, as well as humans, will eventually feel warm due the convected warm air current transferring its heat. In a radiant heater, heat-waves are emitted directly from the heater and these waves heat all objects in their path. This is a more efficient way of heating people directly in large open spaces with lots of air changes.